Yes... back in the late 1950's, early 1960's polio virus was grown in tissue cultures of green monkey kidney cells. Some were contaminated with SV40... We learned of this in virology class back in the 1970s so it's not new information. However I don't think anyone has provided a direct link with increased cancers in people who got the contaminated polio vaccine. I may have been one of them ! but I'm not worried.... just because the virus antigens & nucleic acid can be found in tumors doesn't mean it is the cause... could be multiple things. One would think that if it were a potent tumor virus a great spike in cancer would have occurred in the 1960's & early 1970s, and it didn't ! Are there longer term effect? we don't know.

One must also remember that during the 1950s is when we first started tissue cultures, scientists were new to it. They didn't realize cells could be infected with viruses and show no signs (latency)... virology was also in its infancy because without tissue culture, scientists had a hard time studying them. You can only do so much in animals and viruses don't grow on laboratory media like bacteria. So I don't think it was deliberate nor even negligent - they just didn't know. AND so many kids were being affected by polio, the country wanted a vaccine ASAP ! They had lost a beloved President FDR to polio. the number of kids in iron lungs was greatly increasing... it was like a cold war with polio and measles at the time. I remember the "scare". I was about 10 when I got the Salk vaccine ("killed virus**"- injection) and about 12 when I got the Sabine (attenuated virus- sugar cube) vaccine ! I remember the long lines at my Elementary school.

terrible about HIV and Hep B vaccine... now that IS a concern !!! . . would need to know specifics though.

** you can't kill a virus - it's not alive to start with but that's what they call it so the public understands.

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